TA = 25°C, f
參數(shù)資料
型號: AD7457BRTZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 21/21頁
文件大?。?/td> 0K
描述: IC ADC 12BIT PSEUDO-DIFF SOT23-8
標(biāo)準(zhǔn)包裝: 1
位數(shù): 12
采樣率(每秒): 100k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 3mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: SOT-23-8
供應(yīng)商設(shè)備封裝: SOT-23-8
包裝: 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型: 1 個偽差分,雙極
產(chǎn)品目錄頁面: 777 (CN2011-ZH PDF)
其它名稱: AD7457BRTZ-REEL7DKR
AD7457
Rev. A | Page 8 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, fS = 100 kSPS, fSCLK = 10 MHz, VDD = 2.7 V to 5.25 V, VREF = 2.5 V, unless otherwise noted.
FREQUENCY (kHz)
65
10
S
INAD
(dB)
20
50
70
75
VDD = 3V
30
40
VDD = 5V
03157-0-014
Figure 5. SINAD vs. Analog Input Frequency for VDD = 3 V and 5 V
0
–20
–40
–80
–60
–120
–100
–140
03157-0-015
SUPPLY RIPPLE FREQUENCY (kHz)
0
100
200
300
400
500
P
S
RR
(dB)
900
1000
VDD = 5V
VDD = 3V
100mV p-p SINE WAVE ON VDD
NO DECOUPLING ON VDD
600
700
800
Figure 6. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
FREQUENCY (kHz)
S
NR
(dB)
0
–20
–40
–80
–60
–120
–100
–140
0
100
8192 POINT FFT
fSAMPLE = 100kSPS
fIN = 30kHz
SINAD = 71dB
THD = –82dB
SFDR = –83dB
03157-0-016
30
50
Figure 7. Dynamic Performance for VDD = 5 V
CODE
DNL
E
RROR
(LS
B
)
1.0
0.8
0.6
0.2
0.4
–0.2
–0.4
–0.6
–0.8
0
–1.0
0
1024
3072
2048
4096
03157-0-017
Figure 8. Typical DNL for the AD7457 for VDD = 5 V
CODE
INL
E
RROR
(LS
B
)
1.0
0.8
0.6
0.2
0.4
–0.2
–0.4
–0.6
–0.8
0
–1.0
0
1024
3072
2048
4096
03157-0-018
Figure 9. Typical INL for the AD7457 for VDD = 5 V
CODES
0
2046
2047
2048
2049
2050
2051
27 CODES
24 CODES
9949
CODES
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
03157-0-019
COUNTS
Figure 10. Histogram of 10,000 Conversions of a DC Input
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